Compositions comprising fluorinated polyether silanes for rendering substrates oil and water repellent

摘要

The present invention provides composition for treating a substrate comprising a homogeneous mixture of:(a) a fluorinated polyether silane of the formula: wherein Rf1 represents a monovalent or divalent polyfluoropolyether group, Q represents an organic divalent linking group, R1 represents a C1-C4 alkyl group, Y represents a hydrolysable group; x is 0 or 1 and y is 1 or 2;(b) an organic or an inorganic acid;(c) water; and(d) an organic solvent. The invention further provides a method of making such a composition and the use thereof to treat substrates to render them oil and water repellent.